html{
    /* font-size:10px; */
    /* font-size:62.5%; */
}

.box{
    border: 1px solid blue;
}

.demo1{
    color: red;
    /* font-family: "Webdings", "Times New Roman", sans-serif; */
    font-family: "宋体", "Times New Roman", sans-serif;
    font-size: 3rem;
}

.demo2{
    font-style: italic;
    font-weight: bolder;
}

.demo3{
    /* text-align: left; */
    /* text-align: right;
    padding-right: 16px; */
    /* text-align: center; */
    text-align: justify;
}

.demo4{
    /* line-height: 30px; */
    line-height: 1.5;
}

.demo5{
    line-height: 2;
    /* text-decoration: none; */
    /* text-decoration: underline; */
    /* text-decoration: overline; */
    /* text-decoration: line-through; */
    text-decoration: overline underline line-through;

}

.demo6{
    text-indent: 2em;
}

.demo7{
    letter-spacing: 0.2em;
    word-spacing: 1em;
}

.demo8{
    /* text-transform: capitalize; */
    /* text-transform: lowercase; */
    text-transform: uppercase;
    text-shadow: 4px -10px 3px red;
}